Make pid_max grow dynamically as needed.

ffb726cd · Linus Torvalds · e06818fb · ffb726cd
Commit ffb726cd authored Sep 17, 2002 by Linus Torvalds
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kernel/fork.c kernel/fork.c +2 -0

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--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -175,6 +175,8 @@ static int get_pid(unsigned long flags)
 	if (last_pid >= next_safe) {
 inside:
+		if (nr_threads > pid_max >> 4)
+			pid_max <<= 1;
 		next_safe = pid_max;
 		read_lock(&tasklist_lock);
 	repeat: